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公开(公告)号：US20190047617A1
公开(公告)日：2019-02-14
申请号：US15674063
申请日：2017-08-10
CPC分类号： B62D6/008 , B62D5/006 , B62D5/0463 , B62D5/0472
摘要： An electric power steering (EPS) system and methods to attenuate disturbances at the steering wheel by providing a feed forward motor drive input. The EPS includes an electric motor configured to provide a motor drive output responsive to a motor drive input, and an electronic control unit (ECU) being configured to provide the motor drive input, with at least one motor drive component of the motor drive input including compensatory periodic disturbance data. The ECU is further configured to provide disturbance attenuation with the at least one motor drive component from a road wheel signal and vibratory characteristics of a disturbance signal affecting the steering system.
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公开(公告)号：US10183696B2
公开(公告)日：2019-01-22
申请号：US14844964
申请日：2015-09-03
摘要： Methods and systems are provided for controlling a steering system of a vehicle is provided. A detection unit is configured to obtain a compass heading, a global positioning system (GPS) heading, or both. A processor is coupled to the detection unit, and is configured to determine whether a vehicle is on a straight line path using the compass heading, the GPS heading, or both, and to selectively implement a feature of the steering system based on whether it is determined that the vehicle is not on a straight line path.
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公开(公告)号：US20180313723A1
公开(公告)日：2018-11-01
申请号：US15499016
申请日：2017-04-27
IPC分类号： G01M17/02
CPC分类号： G01M17/021
摘要： A method of controlling a tire/wheel assembly includes measuring a first amplitude of a selected harmonic order of the radial force variation of the assembly, and locating a first angular location of the selected order of the radial force variation of the assembly. A second angular location of a tire is located, which indicates a phase of the selected order of a radial force variation of the tire, having a second amplitude. A third angular location of a wheel is located, which indicates a phase of the selected order of a runout value of the wheel, and has a third amplitude. A remaining force metric may be calculated using the pairs of the first amplitude and the first angular location, the second amplitude and the second angular location, and the third amplitude and the third angular location.
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公开(公告)号：US09329103B2
公开(公告)日：2016-05-03
申请号：US13678063
申请日：2012-11-15
CPC分类号： G01M17/02
摘要： A system for characterizing a vehicle tire is provided. The system includes a testing assembly configured to support the vehicle tire. The assembly includes a force-moment transducer configured to gather force information from the vehicle tire in response to a stimulus on the vehicle tire. The system further includes an accelerometer coupled to the vehicle tire and configured to gather vibration information from the vehicle tire in response to the stimulus on the vehicle tire. The system further includes a post-processing system configured to receive the vibration information from the accelerometer and the force information from the force-moment transducer. The post-processing system is further configured to extract resonant frequencies from the vibration information and the force information.
摘要翻译： 提供一种用于表征车辆轮胎的系统。 该系统包括构造成支撑车辆轮胎的测试组件。 组件包括力矩传感器，其构造成响应于对车辆轮胎的刺激而从车辆轮胎收集力信息。 该系统还包括耦合到车辆轮胎并被配置为响应于车辆轮胎上的刺激而从车辆轮胎收集振动信息的加速度计。 该系统还包括后处理系统，其被配置为从加速度计接收振动信息和来自力 - 力矩传感器的力信息。 后处理系统还被配置为从振动信息和力信息中提取谐振频率。
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15.发明授权公开(公告)号：US09266558B2
公开(公告)日：2016-02-23
申请号：US13841031
申请日：2013-03-15
IPC分类号： B62D5/04
CPC分类号： B62D5/0472 , B62D5/046
摘要： Methods and systems are provided for suppression of steering wheel vibrations generated by periodic disturbances in a vehicle steering system. An exemplary method reducing steering wheel vibrations caused by periodic disturbances involves determining a gross torque attributable to the periodic disturbances in the steering system, identifying a desired amount of suppression of the vibrations at the steering wheel, determining an offset torque based on the gross torque and the desired amount of suppression, and generating a motor command signal in a manner that is influenced by the offset torque. The motor drive command signal is provided to an electric motor coupled the steering wheel and/or the vehicle tires, and the motor drive command signal influences the torque applied by the motor to assist steering of the vehicle tires by the steering wheel in a manner that attenuates the vibrations communicated to the steering wheel by the desired amount.
摘要翻译： 提供了用于抑制由车辆转向系统中的周期性扰动产生的方向盘振动的方法和系统。 减少由周期性扰动引起的方向盘振动的示例性方法包括确定归因于转向系统中的周期性干扰的总转矩，识别期望的方向盘振动抑制量，基于总扭矩确定偏移扭矩， 期望的抑制量，并且以受偏移扭矩影响的方式产生电动机命令信号。 马达驱动指令信号被提供给耦合方向盘和/或车辆轮胎的电动马达，并且马达驱动指令信号影响由马达施加的扭矩，以辅助方向盘来转向车辆轮胎，方式如下： 衰减传递到方向盘的振动所需的量。
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16.发明授权System and method for reducing steering wheel vibration in electronic power steering systems 有权减少电动助力转向系统方向盘振动的系统和方法公开(公告)号：US09120500B2
公开(公告)日：2015-09-01
申请号：US13840030
申请日：2013-03-15
IPC分类号： B62D5/04
CPC分类号： B62D5/0472
摘要： Methods and apparatus are provided for reducing steering wheel vibrations in electronic power steering systems. The apparatus includes a processor and performs a method that estimates an average angular wheel speed of at least one wheel of the vehicle; determines an average wheel angle from the average angular wheel speed; generates sine and cosine functions of the average angular wheel angle; processes the sine and cosine functions with a steering wheel torque signal received from a torque sensor to extract amplitude components of at least one of the sine and cosine functions; reconstructs the sine and cosine functions using the steering wheel torque signal; combines the sine and cosine functions to provide a control signal, and controls the EPS system via the control signal to attenuate smooth road shake vibrations in a steering wheel of the vehicle.
摘要翻译： 提供了用于减少电子助力转向系统中的方向盘振动的方法和装置。 该装置包括处理器，并且执行估计车辆的至少一个车轮的平均角轮速度的方法; 从平均角轮速度确定平均车轮角度; 产生平均角轮角度的正弦和余弦函数; 使用从扭矩传感器接收的方向盘扭矩信号处理正弦和余弦函数，以提取至少一个正弦和余弦函数的振幅分量; 使用方向盘扭矩信号重建正弦和余弦函数; 结合正弦和余弦功能来提供控制信号，并通过控制信号控制EPS系统，以衰减车辆方向盘中的平稳的道路抖动振动。
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